Add working directory search path for composer

Added a needed search path for composer.json and a test testing exactly this.

src/ComposerManager.php

@@ -3,10 +3,17 @@ declare(strict_types=1);
 
 namespace LotGD\Core;
 
-use Composer\Composer;
+use Composer\{
+    Composer,
+    Factory,
+    IO\NullIO
+};
 use Monolog\Logger;
 
-use LotGD\Core\Exceptions\LibraryDoesNotExistException;
+use LotGD\Core\{  
+    Exceptions\InvalidConfigurationException,
+    Exceptions\LibraryDoesNotExistException
+};
 
 /**
  * Helps perform tasks with the composer configuration.
@@ -32,8 +39,22 @@ class ComposerManager
     public function getComposer(): Composer
     {
         if ($this->composer === null) {
-            $this->composer = \Composer\Factory::create(new \Composer\IO\NullIO());
+            // Search "true" working directory
+            if (file_exists(getcwd() . "/composer.json")) {
+                $cwd = getcwd() . "/";
+            }
+            elseif (file_exists(getcwd() . "/../composer.json")) {
+                $cwd = getcwd() . "/../";
+            }
+            else {
+                $cwd = getcwd();
+                throw new InvalidConfigurationException("composer.json has neither been found in {$cwd} nor in it's parent directory.");
+            }
+            
+            $io = new NullIO();
+            $this->composer = Factory::create($io, $cwd . "composer.json");
         }
+        
         return $this->composer;
     }
 

tests/BootstrapTest.php

@@ -29,6 +29,25 @@ class BootstrapTest extends \PHPUnit_Framework_TestCase
         $this->assertNotNull($g->getEventManager());
         $this->assertNotNull($g->getLogger());
     }
+    
+    public function testWorkingFromChildWorkingDirectory()
+    {
+        $cwd = getcwd();
+        $oldconf = getenv("LOTGD_CONFIG");
+        chdir($cwd . "/tests/");
+        putenv("LOTGD_CONFIG=../".$oldconf);
+        
+        $this->assertStringEndsWith("/tests", getcwd());
+        $this->assertStringStartsWith(".././", getenv("LOTGD_CONFIG"));
+        
+        $game = Bootstrap::createGame();
+        
+        chdir($cwd);
+        putenv("LOTGD_CONFIG=" . $oldconf);
+        
+        $this->assertStringEndsNotWith("/tests", getcwd());
+        $this->assertStringStartsNotWith(".././", getenv("LOTGD_CONFIG"));
+    }
 
     public function testGenerateAnnotationDirectories()
     {